Doorcheck



March 2, 1954 c. FERNANDEZ DOOR CHECK Fil-ed May 25, 1949 i." .'7 2 t Si INYENTR mam' mma/WEZ Patented Mar. 2, 1.954

UNITEDv STATES iTENT OFFICE D'OORCHECK Charles Fernandez, San Francisco, Calif.

Application May 23, 1949, SerialN'o. 94,1836

I 1-. Claim. l

This invention relates particularly to improvements in door-checks, and has for its principal object to provide an improved and novel form of doorcheck whereby a door may be automatically checked and retained in a number of different positions.

A further object of the invention is to provide cooperating means on a door frame and door, whereby when the door is moved from a closed into any selected openposition, or from an open position to a point approximating a closed position, it may be automatically held at any selected point. My device isintended particularly for use on stateroom doorsV on vessels, inasmuch as it provides a semi-positive means for preventing the door from swinging to either side of a predetermined point of said setting, it being Well known that stateroom doors on vessels are difficult to maintain in an open or partly open position, without some positive means of fastening, chiefly because of the pitch and roll of the vessel.

Other objects and advantages are to provide a door check that will be superior in point of simplicity, inexpensiveness of construction, positiveness of operation, and facility and convenience in use `and general efficiency.

In this specification and the annexed drawing, the invention is illustrated in the form considered to be the best, but it is understood that the invention is not limited to such form, because it may be embodied in other forms; and it is also to be understood that in and by the claim following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying drawing:

Fig. 1 represents a front elevation of doorcheck constructed in accordance with my invention applied in operative relation to a door and a door frame.

Fig. 2 is a plan view, partly in section, of Fig. 1.

Fig. 3 is an enlarged cross section taken through my doorcheck `'applied in operative position to a door.

Fig. 4 is a fragmental section taken through Fig. 3 on the line 4 4.

Fig. 5 is a detail perspective view of the thumb screw and bayonet joint connection.

Fig. 6 is a perspective view showing the interior of the closure cap.

In detail the construction illustrated in the drawing comprises a frame I, deiining an opening within which a door, or window, or other analogous enclosure, is mounted A door 2 is hinged to the frame I in a conventional manner.

CFI

A guide element or rack 3` is attached to the frame I on the side thereof relative to which thev door swings on its hinge pivots. The guide element is provided with an arcuate portion 4 thereon, said arcuate portion being formed! on an arc of a circle, which is concentric to the pivotal axis of the door on the frame. The arcuate portion 4 of the guide member may have a length equal only to one quarter of a circle, or it may have a length equivalent to a half circle. The arcuate guide member 3 is adapted. to lie in a substantially horizontal plane. The upper face of the guide 3 is at and smooth, while the under face 5 of the said arcuate' guide is prox vided with a series of serrations or undulations. The undulationsare curved inthe form of a series of crests and troughs.

A cylinder 6 is bolted, or otherwise securely attached to the outside of the door 2 near the hinged corner thereof. The bolting mechanism consists of a ring I5, surrounding the outside of the cylinder 5, and having a threaded shaft I6 thereon which threads into a sleeve I1, said sleeve I7 being screwed or otherwise secured into the door 2. A flange member I8 is mounted on the inside face of the door around the sleeve II to hold said sleeve in a desired position of adjustment. A lock nut I9 is threaded on the shaft I6 to butt against the outer face of the sleeve I1 for the purpose of holding the cylinder 6 in set location.

The cylinder 6 is provided with a pair of arms l at diametrically opposite sides of the upper end thereof and a roller 8 is journaled on a shaft I4 which has its opposite ends fixed in the upper ends of the arms 'I by the set screws 20. By removing the set screws 20 from the arms 1 it thus becomes possible to remove the shaft I4 and roller 8 and to install the door check on the guide so that the respective rollers 8 and I0 engage the upper and lower faces of the arcuate guide.

The arms I on the cylinder extend upwardly on both sides of the arcuate guide 3 and the under surface of the roller 8 is adapted to contact with the top flat face of the arcuate guide 3.

A plunger or piston 9 is slidably confined within the cylinder 6, the upper end of said plunger 9 having a roller I0 journaled transversely thereacross. The roller I0 is journaled on a pin I I and the opposite ends 2I of the pin I I are flattened to slide in vertically disposed slots I2 formed in the arms I whereby the respective rollers 8 and I0 are kept in vertical alignment. The plunger 9 is free to reciprocate within the cylinder 6 against the tension of an expansion spring I3 which is conned within the plunger 9 between a fixed pin 22 therein and a movable circular plate 23. A disc 26 is provided with pins 24 on diametlrically opposite sides of the circumference thereof and said pins are adapted to be set into bayonet slots 25 formed at the lower end of the cylinder- 6. A thumb screw 2'! is threaded into the disc 2S and engages the bottom face of the plate 23 for adjusting the tension of the spring I3. An ornamental cap 39, which has pins 3I projecting inwardly on the interior thereof, is adapted to be tted over the lower end of the cylinder 6, with the pins 3I engaging the bayonet slots 25 to enclose the thumb screw 2'I and the entire lower end of the cylinder 6.

The roller I 9 on the plunger 9 is adapted to bear against the wavy and undulating face of the arcuate guide 3, the spring I3 causing the said plunger 9 to exert an upward force on the arcuate guide, which force is reduced to a friction by the undulating face of the guide, and thus serves to hold the door 2 in any selected open position.

When the door is swung from the closed to an open position, or moved from any open position toward the closed position, the spring acting on the plunger 9 allows the plunger to follow the wavy contour of the guide member and at such times as the roller on the plunger rests in any trough on the guide member, sufficient frictional force is created on the guide member to hold the door in the open position. The tension of the spring I3 is sufficient to resist the ordinary tendency of the door to swing, and additional eilort is required to move the door from any selected open position in which it may be placed.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the shape, size, material and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claim.

Having thus described this invention, I claim:

A doorcheck adapted for use on a door, said doorcheck having a cylinder, means securing the cylinder to a door, said means for securing the cylinder comprising a ring surrounding the cylinder, a threaded shaft extending from one side of the ring, an internally threaded sleeve secured in the door and adapted to receive the said shaft, said sleeve extending from the outer face of the door through the inner face thereof, and a lock nut threaded on the shaft and adapted to abut against the outer face of the sleeve for the purpose of retaining the cylinder in a fixed location, said lock nut adapted to hold said sleeve and threaded sha-ft from relative movement with respect to each other. Y

CHARLES FERNANDEZ.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 658,259 Harlow Sept. 18, 1900 '792,240 Shelton June 13, 1905 1,581,908 Bartholomew Apr. 20, 1926 1,979,826 Fernandez Nov. 6, 1934 1,983,125 Ellison Dec. 4, 1934 

